1. Rubūbiyyah — Allah alone sustains all the worlds; no one else is their Sustainer.
2. Ulūhiyyah — Allah alone deserves worship; no one besides Him may be worshipped.
3. Ṣifāt — Allah is unique in His attributes, with no partner sharing them.
Lordship concerns sustaining and governing creation; worship concerns who alone deserves it; and attributes concern Allah's uniqueness in His attributes. These are three aspects of tawḥīd.